Extract component for budget actions

We can omit passing a parameter to the helper method thanks to that, and
we group related code together.

app/components/admin/budgets/table_actions_component.html.erb

@@ -0,0 +1,11 @@
+<%= render Admin::TableActionsComponent.new(budget, actions: [:edit], edit_text: t("admin.budgets.index.edit_budget")) do %>
+  <%= link_to t("admin.budgets.index.budget_investments"),
+                 admin_budget_budget_investments_path(budget_id: budget.id),
+                 class: "button hollow medium" %>
+  <%= link_to t("admin.budgets.index.edit_groups"), admin_budget_groups_path(budget) %>
+  <% if budget.poll.present? %>
+    <%= link_to t("admin.budgets.index.admin_ballots"), admin_poll_booth_assignments_path(budget.poll) %>
+  <% else %>
+    <%= link_to_create_budget_poll %>
+  <% end %>
+<% end %>

app/components/admin/budgets/table_actions_component.rb

@@ -0,0 +1,21 @@
+class Admin::Budgets::TableActionsComponent < ApplicationComponent
+  attr_reader :budget
+
+  def initialize(budget)
+    @budget = budget
+  end
+
+  private
+
+    def link_to_create_budget_poll
+      balloting_phase = budget.phases.find_by(kind: "balloting")
+
+      link_to t("admin.budgets.index.admin_ballots"),
+        admin_polls_path(poll: {
+        name:      budget.name,
+        budget_id: budget.id,
+        starts_at: balloting_phase.starts_at,
+        ends_at:   balloting_phase.ends_at }),
+        method: :post
+    end
+end